Electric engine heater



FIG. 1 is a top and right side perspective view of an electric engine heater showing my new design;

FIG. 2 is a bottom and left side perspective view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a right side elevational view thereof;

FIG. 7 is an elevational view thereof from the left of FIG. 6; and,

FIG. 8 is an elevational view from the right of FIG. 6. 

The ornamental design for an electric engine heater, as shown and described. 